Table 2. Anthropometry at baseline and at last follow-up visit.

	Number	Mean z-score BMI initial visit (±SD)	Mean z-score BMI last follow-up visit (±SD)	Mean number of follow-up months (±SD)
All	453	2.74 (0.85)	2.38(0.82)	16 (12)
Female	245	2.52 (0.73)	2.18(0.75)	16 (13)
Male	208	2.99 (0.90)	2.61(0.84)	15 (12)
Age < 10 ys	173	3.15(0.99)	2.70(0.86)	17 (13)
Age ≥10 ys	280	2.49(0.62)	2.18(0.73)	15 (12)
1≤ z-BMI<2	61	1.73(0.21)	1.46(0.50)	13 (11)
z-BMI ≥2	392	2.90(0.80)	2.52(0.77)	16 (13)